Abby and Gretchen have been best friends since fifth grade, when they bonded ove
r a shared love of E.T., roller-skating parties, and scratch-and-sniff stickers.
But when they arrive at high school, things change. Gretchen begins to actdiffe
rent.
And as the strange coincidences and bizarre behavior start to pile up,
Abby realizes there's only one possible explanation: Gretchen, her favourite per
son in the world, has a demon living inside her. And Abby is not about to let an
yone or anything come between her and her best friend. With help from some unlik
ely allies, Abby embarks on a quest to save Gretchen.
But is their friendship
powerful enough to beat the devil?